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| observation well (used to observe pressure in reservoir and take fluid samples) | |||
| observational borehole (Sagoto) | |||
| indicator hole | |||
| pilot well; sampling hole (US) | |||
| monitoring borehole (Lialia03) | |||
| monitoring well (vbadalov); perforated pipe (Other names for monitoring wells are observation wells, perforated pipes or open-sided wells: https://allamericanenviro.com/what-is-the-difference-between-a-piezometer-and-a-groundwater-monitoring-well/ Bauirjan); open-sided well (Other names for monitoring wells are observation wells, perforated pipes or open-sided wells: https://allamericanenviro.com/what-is-the-difference-between-a-piezometer-and-a-groundwater-monitoring-well/ Bauirjan) | |||
| key well | |||
| inspection well; observation well | |||
| observation hole; telltale borehole | |||
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| ground water monitoring well (грунтовых вод) | |||
| наблюдательная скважина: 2 phrases in 1 subject |
| Oil / petroleum | 2 |